Cub Cadet
Drive Gearbox Wear / Damage
Robot mower makes loud clicking or grinding noises from one wheel while driving
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Worn gears in drive motor gearbox, Broken gear teeth, Contaminated gearbox with water or dirt, Bent motor shaft
How to Fix / Troubleshooting
Safety first: Turn OFF the mower, disconnect the battery, and support the mower securely.
- Identify side: Manually rotate each drive wheel and listen for abnormal sounds. The noisy side indicates the failing gearbox.
- Check wheel attachment: Ensure the wheel is firmly attached and not slipping on the hub.
- Inspect for external debris: Remove any stones or hard objects lodged near the wheel hub.
- Replace gearbox: If grinding persists, the Cub Cadet drive motor/gearbox assembly should be replaced as a unit; gearboxes are not typically serviceable.
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Repair Difficulty
Hard
4/5
Required Part
Drive Motor and Gearbox Assembly
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